Multiple Higgs and vector boson production beyond the Standard Model

Autor(es)

Belyaev, A. ^{[1, 2]} ; Oliveira, A. C. A. ^{[3, 4, 5]} ; Rosenfeld, R. ^{[3, 4, 5]} ; Thomas, M. C. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants - England

^[2] Rutherford Appleton Lab, Particle Phys Dept, Didcot OX11 0QX, Oxon - England

^[3] Univ Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo - Brazil

^[4] ICTP South Amer Inst Fundamental Res, BR-01140070 Sao Paulo - Brazil

^[5] CERN, Dept Phys, Div Theory, CH-1211 Geneva 23 - Switzerland

• Tipo de documento: Artigo Científico
• Fonte: Journal of High Energy Physics; n. 5 MAY 2013.
• Citações Web of Science: 3

Resumo

If the electroweak symmetry breaking is originated from a strongly coupled sector, as for instance in composite Higgs models, the Higgs boson couplings can deviate from their Standard Model values. In such cases, at sufficiently high energies there could occur an onset of multiple Higgs boson and longitudinally polarised electroweak gauge boson (VL) production. We study the sensitivity to anomalous Higgs couplings in inelastic processes with 3 and 4 particles (either Higgs bosons or VL's) in the final state. We show that, due to the more severe cancellations in the corresponding amplitudes as compared to the usual 2 2 processes, large enhancements with respect to the Standard Model can arise even for small modifications of the Higgs couplings. In particular, we find that triple Higgs production provides the best multiparticle channel to look for these deviations. We briefly explore the consequences of multiparticle production at the LHC. (AU)

• Processo FAPESP: 11/10199-3 - Quebra de simetria eletrofraca no LHC
• Beneficiário: Rogério Rosenfeld
• Linha de fomento: Bolsas no Exterior - Pesquisa